Oscillating fan.



C. AALBRG.

OSCILLATING-FAN. APPLICATION man Dec.26. 1911.

1,241,600. Patented Oct. 2, 1917.

2 SHEETS-SHEET I.

C. AALBOHG.

OSCILLATING FAN.

APPLICATION man nmzs. 1911.

1,241,600. Patented oct. 2,1917.

2 SHEETS-SHEET 2.

Wl fliesst-s.- /N VEN ron i WM;

Toallawham it may @OMGM p f j j @Be it vknown that I, ,CHRrs'rrAN AALBOR'G, f1 .j a 'citizen of, the United-f States,- andV an lfeS- f "dent ofWilkinsburgl, inthe coun-tyofAller `5 fgihenyand; `State A4of,.Per'lnsylvania', hawe in- 'vented.aI new and useful InfiprovementA in.

i :Oscillating Fans, of which thejfollowing is a-SpecifQation-y .1 i l -K .f

.j 1 invention relates to. oscillating ,i fans,

devicesj otrth'is type .which` are provided 4withi o,bst ructingl` vanes` for,` the purpose of ,effec-tingtheooscillatory movements of the fan@V i 'f l .u 'Oneobject of." invention is provide idejadequatemeans Ifor reversing the o;- 1 -s1,tonofthe obstructing vvanes as rthe ian approaches its respective.` limits' of, travel,

of oscillation just prior to engagement'vvith the;limiting stops. f Y fIfn the past, the field pf-'usefulness of air- Vcontrolled oSella-ting fans Yhas beenn somewhat .restricted for the reason thaty provision has not been made for adjustability of mounting, and the reversing-'mechanism for i VWith the supportingibase.` Furthermore, it :y has beencustomary toy operatefans at full speedj'throughout thev entire range of travel,

"strainsWhiclfi`- often resultedfin damage to fthe @renews-afp" 145 Accordingtoinyv present 'inventiomal etapes@ teeveremefthefdicultles. herein- 'j osoILLATING FAN.

i l spsnratoa of Letters Patent.

nditV hasspecial referenceto a'i'rfoperated jevice of 'the above-indicated character hallfembodyr-jmeans that Willgpermit of vthereby effecting aretardation in the Speed operating thevanes has been associated I i 'r-ffwhich resulted in considerable slioclc or 'jolstgWhen engagement lWith-fthe limitingv stopsoccurredA vThus,the entireimechanism j `.HoUs`E' ,EL'or'rtro `Aitii 'M-nurnorunme COMPANY, A coRroRA'rIoN or PENN- before recited, and topi-Ovide a readily ladjustableair-controlled oscillating fan which isl easily reversed in "direction with'out undue strain on. the mechanism. 1'

In the accompanying drawings, Figure 1 isa view 1n sidepelevatlonof a device constructed in accordance with my invention;V

-2 .by means of an adjustable hinge or couplingf 3,1- thatpermits yof Wall mounting, as

shovvn in full linesinv Fig. 1,1or of desk mounting, as outlined in insaidgure. y j

.The shaft lLof themotor-l isprovid'ed with `aplurality of fanblades which' are protected from contact with exteriorlobi? jects `by a cage or guard 6, in the' usual manner'. l l v j A shaft 7 ismounted in suitable bearings Sand` 9, infront ofthe fan blades, andi'is centrallydisposed with respect to the shaft hand at right angles thereto. The upper bearing, 8.]is associated Awith a projecting member which forms a part ofthe pro l Patented Oct. 2, 191'?. Application med December 26,1911. seriam. 667,922. v

dot and dash lines teeting guard 6, While the lower bearing v 9 `is carried at thejouterend llmof a sup-` porting bracket 12, which is rigidly suspended from and attached to a projecting arm 13 by rivets or screws 14. The pro-l jectingyarm 13 constitutes la vpart of a main` bearing member 15 that is secured to motor 1 in a suitable manner. plurality of obstructing` vanesl, 18, 19` and rQOare.associated in pairs thatare respectivelyattached to thefshaft `7 above and below the motor shaft 4, the coperating vanes of each pair having a definite angular' relation, the one to the other.

`Attached to the lower end of the shaft 7, and located above the bearing 9, is a gear segment 22. which is adapted to coperatively engage a plurality of teeth 23, the latter being located at the fre'e'outer end of an operating lever 24, which is secured to a shaft and is adapted for limited rotative movement between a pair of stops26 and 27 upon the supporting bracket 12. The lever 24 projects through anopening 28 in the supporting bracket 12, and the shaft '25, to which said lever 24 is riveted, is mounted between projecting portions 29 and 30 which form integral'parts of the bracket member 12.

A cam member Blvisrigidly securedto the inner end of the lever 24, and is adapted for cooperative engagement with a relatively stationary member or stop 34. The camv member 31- is symmetrically shaped and is provided Awith ya plurality of substantially oppositely projecting arms 35 and 36,1the curved camsurfaces being provided with projectionsBS fora purpose to be here- `inafterset forth. c v

The coperating stop 34 is mounted upon a projecting member 39 lwhich forms an in- `tegral part of a main bearingmember 40,

the latter member being stationary with respect' to the pivotally mounted motor `1,

andindependently adjustable in position as v lregards the supporting base2. f

The motor 1 is pivotally' mounted in the bearing member v40 by meansof a pin 41,

which constitutes la part of the bearing mem ber 15 and projects into a .recess provided in the bearing member 40. Interposed between the bearing members 15 and 40,v is a floating collar member 42 which is provided with an upwardly projecting portion 43 and a plurality of 'downwardly projecting portions 44 and 45, all'of said projecting portionsv being located eXteriorly with respect to the bearing members 15 and 40. The upwardly .projecting portion 43 is provided with an elongated slot 46, while the downwardly vprojecting portions l44 and 45 are adapted to engage a portion of the projecting member 39 when the fan approaches its limitsl of travel.

The bearing member 15. is also provided with an annular recess 47 for the purpose of receiving an annular `spring 50which surrounds the pin 41 and the ends of which project through a slotted'opening 51 in the side vof said bearing member and also through the slot 46 in the floating collar member 42. By means of the structure just described, vthe oscillatory movement of the fan is limited to a definite` rangev of travel, and resilient means, in the form of the spring 50, is proi vided for arresting the movement thereof at the respective limits of travel.

Assuming that the various parts of the device occupy the positions shown in Figs. 1

wise direction, the projecting portion 38 of the cam surface of arm 35 comes into c0- operativey engagement with the. pin or V`stop 34, whereby the operating'lever :24 is actuated to reverse the. positions of the obstructing vanes 17, 18, 19 and 20, by reason of the c coperative engagement of the teeth 23 Vand the gear segment 22. l j

During this period, the floating collar member 42 is Vrotated lin a clock-wise direction by reason of its engagement with the spring 50 which is also in contactwith the bearing member 15.

various component parts are such that the downwardly projecting portion 45 loff Vthe Vfloating collar member 42 engages the pro-l jecting portion 39 Vat approximately thetime the cam` member Bleffects arevers'al of the obstructing vanes by reason ment with the pin 34. j

of 'its engagej j v Having effected a' reversal in positionl of the obstructing lvanes 17 to 20inclusiv'e, the air delivered by i the fan isv directed loo against the yinner facesy of the vanes 17 vand. 19, whereby the rotative movementk of the fan in a-clock-wise. direction, is retardedor cushioned'as the fan approaches its limit of travel. By thus retarding the movement ofv the fan just prior to its engagement with its limiting stops, it is apparent vthat 'undue' i shocks and strainsto Awhich it would otherwise be subjected, are prevented.

Subsequentto the reversal of the obstructing vanes, the fan `travels a short distance and, in so doing,-is opposed by the action of the spring 50, so that its motionis finally arrested thereby,the various parts occupying the positions shown in Fig. 6. f

Having reached its limitV of travel in a clockwise direction, andv inasmuch as the f obstructing vanes 17 and 19 are acted upon bythe air from they rotating blades `5, areversalin the direction of rotation ofthe fan `is effected, and this' movement continues. until the projection 38 of the arm '86 of the f cam member l31 comes into engagement with the pin 34, andthereby causes aff reversal of the obstructing'vanes 17 to 20, inclusive, in a mannersimilar tol that hereinbefore described. A

` Itis not considered necessaryto further "location of parts hereinbefore set forth, and

l'."fo

1. The combination with a pivotally f mounted motor-driven fan, movable vanes associated therewith for effecting an oscillaa, describe the operation of thisrdevicefon ac- `count of its similarity to that portionoff the "aoperation which hasfjustbeenset forth, and

V obtained. Obviously, ,by properly designing i the'cam surface of the'memberBI, ajreversal of the obstructing vanesfl `te 20,inclusive,

may be veffected at any Ipredetermined point A oscillations of said fan for' completely rei it is believed "that these skilledgin the'art will havea no difficulty in understanding that a periodic. -oseillilatingmovement of the fan is ,wiftlrrespecttoy th'eflim-its of"travel,jand, if

.'25 i xjmounted and adjusted in any desired man- `ner,rwh1ch isa distinct advance over the j prlor art.

- desired, the vanes alone may be employedv` forretarding the movement of the fan and reversing its direction of rotation Without the use of limiting stops of any character Whatever. s

Moreover, inasmuch as the reversing l `'fjmechanism is located above the hinge or coupling 3 and is entirely independent of the supporting base 2,' thev device may be I do notwish tovbe restricted to the specic structural details and the arrangement and I desire that only such limitations shall be imposed as are indicated in the appended '.claims.

' Iv claim'as my invention:

tory movement thereof, and means for limit- `ing ythe travel thereof, of means for completely reversing saidvanes a predetermined `interval prior to the operation of said limit- ,r ing means.

2. The combination with a pivotally mounted motor-driven` fan, movable' vanes associated therewith for effecting an oscilflatory movement thereof,'and means for limiting the travel thereof, of means independent of said limiting means for actuating said vanes a predetermined time before "the operationof said limiting means. Q V3. The combination with a pivotally 'fmounted fan, movable vanes associated oscillatory movement of said fan, of means v independent of said base for causingsaid '6o L it approaches its limitsfof travel.

therewith for effecting oscillatory *so move- `ments thereof, and means forlimiting the travel of said fan, of means for completely l. reversing said vanesto retard the movement of said fan a predetermined interval prior to the action of said limiting means.

, 1', j The combination `with a pivotally mounted fan, having an adjustable supporting base, and movable `,vanes for effecting an vanes to retard the movement of said fan as `5. The combination with a' pivotally i' i mounted fan, movable rvanes associated therewith for effecting an oscillatory movef ai ment thereof, and an adjustable supporting base, of means for limiting the travelof `said fan and means for reversing the position of said vanes prior to the' ends of travel,

`bothof said means beingindependent of said supporting base;

6.A In an oscillating fan, the combination with obstructing vanes movably associated therewith u for effecting oscillatory movements thereof, of means dependent upon the versing its vanes a predetermined distance ahead of its limits of travel.

7. In an oscillating fan, the combination with an adjustable supporting base adapted for desk or wall mounting, and movable vanes disposed in front of said fan for effecting oscillatory movements thereof, of means independent of said supporting base and dependent upon the oscillations for versing the position of said vanes before the r end of travel is reached.

9. The combination with a rotatable,

pivotally mounted motor-driven fan and a set of movable vanes associated therewith for eecting oscillatory lmovements thereof, of an engaging member, a coperating cam member, and mechanical-means for effecting changes in the position of said set of vanes, the contour of said cam being such as to reverse the position of said vanes before the limits of travel are reached.

10. The combination with a pivotally mounted motor driven fan, obstructing vanes associated therewith for effecting oscillatory movements thereof, and a single yielding means for arresting the movement of said fan in either direction, of means embodying a relatively movable cam and cooperating member for reversing said vanes prior to the operation of said yielding means.

11. The combination with a pivotally mounted fan, and adjustable vanes for oscillating said fan within a definite range of travel of a pivotally mounted lever associated with said fan and coperating` with said vanes, a symmetrically shaped cam fixed to saidy lever, and a stationary member adapted to be engaged by said cam in both directions of travel, whereby said vanes are reversed before the limits of travel are reached.

12. The combination with a pivotally mounted motor-driven fan, movable vanes associated therewith for effecting an oseillatory movement thereof, and an adjustable supporting base7 of a single yielding means disposed above said base for retarding the movement of said fan at the ends of its travel, and means" eoperating With a p0rtion above said base and independent of said *limitingv means yfor reversing the positions 10 of said vanes. v

In testimony whereof, I have hereunto subscribed my name this 12th day of Dee.,

. Copies of this patent may be obtained for ve cents each, by addressing` the fcommissioner of Patents, A Washington, D. C. h l 

